/Engine/Source/Editor/MovieSceneTools/Public/Constraints/MovieSceneConstraintChannelHelper.h
For the given constraint get all of the transform keys for it's child and parent handles
static void GetTransformFramesForConstraintHandles ( const [UTickableTransformConstraint](API\Runtime\Constraints\UTickableTransformConstraint) * InConstraint, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [ISequencer](API\Editor\Sequencer\ISequencer) > & InSequencer, const [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) & StartFrame, const [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) & EndFrame, [TArray](API\Runtime\Core\Containers\TArray)< [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) > & OutFramesToBake )